Automatic plaster-supplying device



,June 4, 1929. OWY 1,716,317

AUTOMATIC PLASTER SUPPLYING DEVICE Filed Sept. 3, 192'? 2 Sheets-Sheet1.

`lune 4, 1929.

L.. I OWY 1,716,317 'AUTOMATIC PLASTER SUPPLYING DEVICE I Filed sept. s,1927 2 Sheets-Sheet 2 y Patented June 4, 1929.

UNITE S LOUIS LOWY, OF NEW YORK, N. Y., ASSIGNOB, OF ONE-HALF TO ISIDOREGROSSGOLD.

AUTOMATIC PLASTER-SUPPLYING DEVICE.

, Application led September 3, 1927. Serial No. 217,341. .l

This invention relatesto a new and useful device in the nature of anautomatic plaster supply device provided for the purpose of supplyingplaster through ahollow flexible member as a means of eliminating themanual effort ordinarily required to transport or carry plaster, such asis used to plaster walls, ceilings, and the like, of buildint'gs,l tothe wall where same is to be used or applied.

rlhe object of the invention is to provide a device of the classdescribed of novel construction and arrangement of parts hereinaftermore fully described, claimed, and illustrated in the accompanyingdrawing.

Fig. 1 is a side elevational view of my improved device as same wouldappear when in use.

Fig. 2 is a central longitudinal sectional view thereof illustrating afurther develop ment of my improved device.

Fig. 3 is a fragmentary sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary perspective view thereof, illustrating inparticular another development of my improved device.

Fig. 5 is a fragmentary sectional view illustrating in particular thehopper as embodied in my improved device.

Fig. 6 is an enlarged sectional view taken on the line 6 6 of Fig. 2.

As here embodied my improved automatic plaster supply device comprisesthe usual screw conveyor 10 mounted on the shaft 11 rotatively mountedin the front and rear end plates 12 and 13 of the tubular member 14. Thetubular member 14 is of suitable diameter to closely conform to theouterdiameter or periphery of the screw conveyor 10.

The tubular member 14 is provided with downwardly extended elements `16or feetv secured as at 17 by bolts, screws, studs, or the like, to thebase plate 18.

The front end plate 12 is provided with an extended portion 19 oftubular construction over which one extremity of the flexible hollowmember 20 is slidably engaged, and which is secured thereto as at 21 bythe usual clamp as a means of securely holding the said flexible member20 in place. Similar flexible hollow members 21 are secured'by theordinary couplings 22 to each other and to the first mentioned flexiblehollow member 20, so as to provide a continuous flexible hollow line ofany desired length. The valve 22 is attached to the free extremity ofthe flexible members 21 and is provided with a nozzle element 23extended therefrom. l

The worm 24 is mounted on the rear extended extremity ofthe shaft 11 andmeshes with the worm gear 25 rotatively mounted on the pin 26 carried inthe bracket 27 secured to the base plate 18.

rlhe shaft 28 is rotatively mounted in the housing 29 and in the bracket30 secured to the said housing. rlhe clutch member 30 is secured to theinner extremity of the shaft'28 and is provided with radial recesses31.The shaft 28 is extended outwardly from the housing 29 and has mountedon its extended extremity a worm 32, meshing with the above mentionedworm gear 25. The shaft 33 is mounted in the housing 29 and in thebracket 34 secured to the said housing and is in alignment with the saidshaft 28. rlhe inner extremity of the shaft 33 has formed thereinlongitudinal recesses 35 or serrations, adapted to slidably receive theclutch member 36 as a means of driving the said clutch member 36 whenthe shaft 33 is rotated lor driven, as

element 42. The housing 29 is of box like construction of suitable sizeto enclose the above mentioned mechanism and isvprovided with acovermember-42. The said housing 29 is mounted on the base plate 18. Thepulley 43 is mounted on the outer extended extremity of the shaft 33,adapted to receive a bolt extended over the'pulley 43 and a similarpulley mounted in any suitable convenient prime mover, as a means ofdriving my improved device. The latter mentioned elements are not shownin the accompanying drawing. It should be understood that a suitableelectric motor 44 may be mounted on the base plate 18 and operativelyattached to the shaft 33 as a means of driving my improved device. Thesaid electricmotor 44 is connected by means of the electric Wires 46 toany suitable convenient source of electric current.

The hopper 51 of hollow cylindrical construction is secured at its lowerextremity to the above mentioned tubular member 111 andextendedvertically upwardlytherefrom. The bevel pinion 52 is mountedonthe outer exten ded portion of the said shaft 11 and meshes with asimilar bevel pinion 53, mounted on the shaft 54E rotatively mounted inthe brack'- ets 55 and 56 secured to the hopper 51. rIhe bevel pinion 57is mounted on the upper extremity of the shaft 541 and meshes with asimilar bevel pinion 58 secured to the shaft 59 rotatively mounted inthe extended element 66 ot the said bracket 56. lIhe shaft 59 isprovided with an enlarged portion 61.01' collar element adapted toretain the pinion 62 in position on the said shaft. r1`he pinion 62 iskeyed to shaft 59. r1`he pinion 62 is removably secured to the sha'tt 59by means oi' the collar 64: slidably engaging over the said shaft andthe usual dritt key 65 somewhat tapered and adapted to removably engagein a similar tapered opening formed in the said shaft 59, a-tvor nearthe extremity thereof. The piston 66 slidablyl engages in the hopper 51land has secured thereto and extended upwardly therefrom a rod 67 havingformed therein` rack teeth 68 adapted to engage the teeth of thepinion'62.' The above described construction is such as will permit the plasterplaced in the hopper 51 to be forced under pressure 4into the tubularmember 141 by the downward movement of the pistonV 66 which is actuatedby the movement or rotating of thev shaft 11. It should be understoodthat whenl the said piston 66 has reached the down ward position thereofas designated by the reference numeral 69 that the pinion 62 is removedfrom the shaft 59 and thepiston. 66 readily and, easily removed from thehopper 51 so as to permit the hopper 51 to be refilled. c

I have alsoshown a workman 70 provided with the above mentioned nozzle28y as a means of illing the container 71 or what is usually known asthe hed in proximity to thewall 7 2 to be plastered. n

In Fig-2 of the accompanying drawing, I have shown a container 72 otbox-like construction, mounted on the supports 7 8, sef cured to thetubular member 14. The cover 74:is slidably mounted in the container 7 2and is normallyl forced downwardly by the expansion spring 75 positionedintermediate the cover 4711 and the brace member 7 6,.hinged asat 77, tothe container 72 and held in a closed positionby means of the wing nut78 threadedly mounted on the screw 79, hinged, as at 79, to thecontainer 7 2. The flexible hollow member 80 is secured at one extremityto the bottom portion ofthe container 72 and. tothe flanged portion 81of the hopper 5l, adjacent to the lower portion thereof.

The fiapper valve 82 indicated open by dot dash lines 82, is hinged, asat 88, to the inner lower portion of the hopper 51, and is adapted toenclose or cover the opening formed in the hopper 51 at the flangedportion 81 thereof., rEhe above described construction is such as willpermit the plaster 84 placed in the container 72- to be Yforceddownwardly by the spring 75, and by the suction of the piston 66, ontheI up or return stroke of the said piston, as a means of filling thehopper 51. It should be understood that ythe flapper valve 82 will beforced open, as designated by the reference numeral 82 during the.return strokeV ot the piston 66, so as to permit the said plaster 811 toenter therhopper 51, and that the downward stroke oit the piston 66 willclose .the tlapper valve 82,'so as to permit the plaster' drawn into thehopper 51 to be Jrorced into the tubular member ist. The pinion 85 isfreely mounted on the shaft 59, and held thereonby the collar 86 secured-to the shalt 59. r1`he ratchetfpawl l87 is pivotally secured to thepinion 85, and is normally held in engagement with the ratchetindentations 89 formed in the shaft 59 adjacent to the pinion 85 bymeans of the tension spring 90 secured to the ratchet pawl 87 and to thepinion 85. The above described construction is such as will permit theshaft 59 when rotated as above set forth to drive or rotate the pinion85 in one direction only, so as to 'torce the piston 66, downwardly intothe hopper 51.

I haveY alsoy provided a. solenoid, having a fixed lield 91, and havingthe wires 92 and 98, thereof, suitably connected to any convenientsource of electric current. The tleld 91 of theA solenoid is mounted onthe support 9-isecured to and extended upwardly from the hopper 51. T hemovable core of the saidL solenoid is connected to the tree extremity ofthe red 67. rEhe above described construction is such as will force thepiston 66, upwardly, on its return stroke, when theii'eld 91 of the saidsolenoid is energized.

Ichave also provided a tubular member 96 secured to the bottom ot thetubular member 14, directlybelow the hopper 51. The plate 97 is slidablymounted in the tubular member 96, and is normally held in anupperposition, against thev lug elements 98, by means of the expansion spring99,*positioned in the tubular member 96 intermediate the-plate 97 andthe base 100; The base 160 is threadedly secured to the lower innerextremity ot the tubular member 96 and is provided with lug elements101, as a means of rotating the base 10,0', so as to increase ordecrease the eii'ective pressure of the spring 99. The above describedconstruction is such as will permit plate 97 to `function as a reliefrvalve as a means of preventing the flexible hollow members 2O and 20irom being broken due to the pressure exerted by the piston 66 in eventthe nozzle 28 is closed. It should be understood that the action of thesaid relief valve may be adj usted by the adjustment of the base 100.

In Fig. a of the accompanying drawing I have shown the above mentionedfront end plate 12 provided with a plurality of extended portions 19adapted to receive a plurality of hollow flexible members 20 as a meansof permitting the plaster to be simultaneously forced to a number ofdesired places as would be desirable when plaster-ing a number of roomsin a building.

In Fig. 1 of the accompanying drawing, I have shown a'flexible hollowmember 48 secured at one extremity to the water faucet 49. The flexiblemember 48 is provided with a nozzle 50 secured to the free extremitythereof. yllhe above described construction is such as will permit waterto be forced into my improved device, through the hopper 51 as a meansof flushing out the interior thereof, and the flexible hollow members 20and 20 as a means of preventing clogging. I have also provided a rod102, normally removably secured to the base plate 18, by means of theclips 103, attached thereto. The rod 102 is provided with a handleelement 104, as a means of manipulating the said rod. rIhe abovedescribed construction is such as will permit the rod 102 to be used toclean the ilexible hollow members 20 and 20 when the said flexiblehollow members are disconnected by means of the couplings 22.

I-Iaving thus described my invention what I claim as new and desire toprotect by Letters Patent of the United States is as follows:

1. In a device of the class described, a tubular member provided with ascrew conveyor, a hopper connected with the tubular member, a pistonslidably engaged in the said hopper, a means for mechanically forcingthe piston downwards, a solenoid connected for returning the piston, acontainer connected to the hopper, a flapper valve connected to thehopper so as to be capable of closing the connection between thecontainer and hopper, and a means for forcing plastic material from thecontainer towards the hopper, so that as the piston travels upwards, theplastic material enters the hopper. A

2. In a device of the class described, a tubular member provided with ascrew conveyor, a hopper connected with kthe tubular member, a pistonslidably engaged in the said hopper, a means for mechanically forcingthe piston downwards, a solenoid connected for returning the piston, acontainer connected to the hopper, a flapper valve connected to thehopper so as to be capable of closing the connection between thecontainer and hopper, and a means for forcing plastic material from thecontainer towards the hopper, so that as the piston travels upwards, theplastic Inateri al enters the hopper, the latter means consisting of acover slidably arranged in the container, a brace member attached t0 thecontainer, and an expansion spring acting between the cover and bracemember.

3. In a device of the class described, a tubular member provided with ascrew conveyor, a hopper connected with the tubular member, a pistonslidably engaged in the said hopper, a means for mechanically forcingthe piston downwards, a solenoid connected for returning the piston, acontainer connected to the hopper, a flapper valve connected to thehopper so as to be capable of closing the connection between thecontainer and hopper, a reliefA valve connected with the tubular member,and being capable of relieving pressure caused by the downward movementof the piston, and a means for forcing plaster material from thecontainer towards the hopper, so that as the piston travels upwards, theplastic material enters the hopper.

In testimony whereof I have aflixed my signature.

LOUIS LOWY.

